Energy–performance trade-offs via the EP-queue

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Title: Energy–performance trade-offs via the EP-queue
Authors: Harrison, PG
Patel, NM
Item Type: Journal Article
Abstract: We introduce the EP queue -- a significant generalization of the MB/G/1 queue that has state-dependent service time probability distributions and incorporates power-up for first arrivals and power-down for idle periods. We derive exact results for the busy-time and response-time distributions. From these, we derive power consumption metrics during nonidle periods and overall response time metrics, which together provide a single measure of the trade-off between energy and performance. We illustrate these trade-offs for some policies and show how numerical results can provide insights into system behavior. The EP queue has application to storage systems, especially hard disks, and other data-center components such as compute servers, networking, and even hyperconverged infrastructure.
Issue Date: 7-Jun-2016
Date of Acceptance: 2-Sep-2015
ISSN: 2376-3647
Publisher: ACM
Journal / Book Title: ACM Transactions on Modeling and Performance Evaluation of Computing Systems
Volume: 1
Issue: 2
Copyright Statement: This work is licensed under a Creative Commons Attribution International 4.0 License.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/L00738X/1
Publication Status: Published
Article Number: 6
Appears in Collections:Faculty of Engineering

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